luca wrote:Interestingly, even after sifting, if I brew pourover filter I still seem to get fines on the filter paper. Is it possible that fines are produced by the very act of brewing?
I've noticed a similar thing when cupping and filtering the coffee through glass rod/metal mesh filter, and my guess is that these particles are so small and so statically charged that they don't separate during sifting. Of course, water would neutralize that static electricity... Anyway that was my thought here:
shadowfax wrote:These brews still let some silt through, oddly enough, but it's very strange: it's so ultra-fine on my fingers that I can barely feel it, and drinking the silty bottom, while unpleasant, is a lot more palatable than drinking the silt from a brew of unsifted grinds. I am thinking this silt is from extremely, extremely tiny particles that are statically attached to the big particles, where the static charge is stronger than the force of the agitation of the sifter, given their tiny mass.